Aeronautical Knowledge Flashcards
7 cards from real PPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Aeronautical Knowledge flashcards as text
What is the standard atmospheric pressure at sea level?
Answer: 1013.2 hPa / 29.92 inHg
Standard sea-level pressure is 29.92 inHg or 1013.2 hPa.
The standard temperature lapse rate in the troposphere is approximately:
Answer: 2°C per 1,000 feet
Temperature decreases about 2°C per 1,000 feet in the standard atmosphere.
A temperature/dew point spread that is small and decreasing indicates:
Answer: Increasing likelihood of fog or clouds
A narrowing temperature-dew point spread signals rising humidity and possible fog or low clouds.
Which type of fog forms on clear nights with light winds due to terrestrial cooling?
Answer: Radiation fog
Radiation fog forms overnight when the ground cools the air to its dew point.
The presence of towering cumulus clouds is a sign of:
Answer: Unstable air with possible turbulence
Towering cumulus indicate unstable air and the potential for turbulence and thunderstorms.
What weather is typically associated with a fast-moving cold front?
Answer: Squall lines, gusty winds, and possible thunderstorms
Fast cold fronts often produce squall lines, gusty winds, and thunderstorms.
A METAR reporting 'BKN025' means the ceiling is:
Answer: Broken clouds at 2,500 feet
In a METAR, cloud heights are in hundreds of feet, so 025 equals 2,500 feet AGL.